Patents by Inventor Ryuji OOTA

Ryuji OOTA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dispersion liquid, conductive film and production method thereof, electrode, and solar cell
    Patent number: 12162989
    Abstract: Provided is a dispersion liquid that can improve coatability (wettability) with respect to a base material and can form a conductive film having high close adherence with a base material. The dispersion liquid contains a carbon material (A), a condensate (B) of an aromatic sulfonic acid compound, a hydroxyphenol compound, and an aldehyde compound, and a solvent (C).
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: December 10, 2024
    Assignee: ZEON CORPORATION
    Inventors: Akihiko Yoshiwara, Ryuji Oota
  • CARBON NANOTUBE WATER DISPERSION, CONDUCTIVE FILM, ELECTRODE, AND SOLAR CELL AND METHOD OF PRODUCING SAME
    Publication number: 20240025749
    Abstract: A carbon nanotube water dispersion contains single-walled carbon nanotubes, acetylene black, a dispersant, and water. The content ratio of the single-walled carbon nanotubes and the acetylene black in the carbon nanotube water dispersion, in terms of a mass ratio of acetylene black/single-walled carbon nanotubes, is 1.4 or less.
    Type: Application
    Filed: August 25, 2021
    Publication date: January 25, 2024
    Applicant: ZEON CORPORATION
    Inventor: Ryuji OOTA
  • Carbon nanotube water dispersion, conductive film, electrode, and solar cell
    Patent number: 11753553
    Abstract: Provided is a carbon nanotube water dispersion with which it is possible to form a conductive film that has excellent film strength and can cause a solar cell to display excellent conversion efficiency and reliability. The carbon nanotube water dispersion is for an electrode of a solar cell that includes an electrolyte solution containing a polar aprotic substance as a solvent and contains carbon nanotubes, a dispersant, a thickener, and water. The dispersant is soluble in the solvent and the thickener is insoluble in the solvent.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: September 12, 2023
    Assignee: ZEON CORPORATION
    Inventor: Ryuji Oota
  • CARBON NANOTUBE WATER DISPERSION, CONDUCTIVE FILM, ELECTRODE, AND SOLAR CELL
    Publication number: 20220389239
    Abstract: Provided is a carbon nanotube water dispersion with which it is possible to form a conductive film that has excellent film strength and can cause a solar cell to display excellent conversion efficiency and reliability. The carbon nanotube water dispersion is for an electrode of a solar cell that includes an electrolyte solution containing a polar aprotic substance as a solvent and contains carbon nanotubes, a dispersant, a thickener, and water. The dispersant is soluble in the solvent and the thickener is insoluble in the solvent.
    Type: Application
    Filed: November 16, 2020
    Publication date: December 8, 2022
    Applicant: ZEON CORPORATION
    Inventor: Ryuji OOTA
  • DISPERSION LIQUID, CONDUCTIVE FILM AND PRODUCTION METHOD THEREOF, ELECTRODE, AND SOLAR CELL
    Publication number: 20220098354
    Abstract: Provided is a dispersion liquid that can improve coatability (wettability) with respect to a base material and can form a conductive film having high close adherence with a base material. The dispersion liquid contains a carbon material (A), a condensate (B) of an aromatic sulfonic acid compound, a hydroxyphenol compound, and an aldehyde compound, and a solvent (C).
    Type: Application
    Filed: January 21, 2020
    Publication date: March 31, 2022
    Applicant: ZEON CORPORATION
    Inventors: Akihiko YOSHIWARA, Ryuji OOTA